... to 7m -2G/3G,BarCode,GPS Handheld portable smart card reader Introduction & feature:Completely self-owned brand. Independent R& ... port:USB 2.0,RS232,RJ45adaptorExtend port:1pcs SD/MMC card slot,1pcs SIM card slot,1pcs PSAM card slotBattery ... whole life service;Free SDK,DEMO, software upgrading or online technology upgrading; Flagship UHF product - Handheld portable smart card reader